(126154) 2001 YH140
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| Discovery | |
|---|---|
| Discovered by |
Michael E. Brown, Chadwick A. Trujillo[1] |
| Discovery date | December 18, 2001 |
| Designations | |
| MPC designation | (126154) 2001 YH140 |
| Minor planet category | TNO (3:5 resonance)[2] |
| Orbital characteristics[1][3] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 48.39 AU |
| Perihelion | 36.368 AU |
| Semi-major axis | 42.204 AU) |
| Eccentricity | 0.138 |
| Orbital period | 274.60 a (100,297.827 d) |
| Mean anomaly | 13.5° |
| Inclination | 11.1° |
| Longitude of ascending node | 108.9° |
| Argument of perihelion | 354.4° |
| Physical characteristics | |
| Dimensions | 345 ± 45 km[4] |
| Mass | ~4.0×1019 kg |
| Sidereal rotation period | 13.25 ± 0.2 h[5] |
| Albedo | 0.06–0.10[4] |
| Temperature | ~42 K |
| Absolute magnitude (H) | 5.8[4] |
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(126154) 2001 YH140, also written as (126154) 2001 YH140, is a resonant trans-Neptunian object discovered on December 18, 2001 by C. A. Trujillo, M. E. Brown.
Orbit and rotation
(126154) 2001 YH140 is locked in 3:5 mean motion resonance with Neptune.[4] When it makes three revolutions around the Sun, Neptune makes exactly five. The rotation period of 2001 YH140 is estimated to be 13.25 ± 0.2 hours.[5]
Physical characteristics
In 2010 thermal flux from 2001 YH140 in the far-infrared was measured by the Herschel Space Telescope. As a result its size has been estimated to be 300–390 km.[4]
References
- ↑ 1.0 1.1 "List Of Transneptunian Objects". IAU Minor Planet Center. Retrieved 2011-01-08.
- ↑ "MPEC 2009-R09 :Distant Minor Planets (16 September 2009.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2009-10-04.
- ↑ "JPL Small-Body Database Browser: (126154) 2001 YH140". 2009-02-02 last obs. Retrieved 2010-08-03.
- ↑ 4.0 4.1 4.2 4.3 4.4 Muller, T.G.; Lellouch, E.; Stansberry, J. et al. (2010). ""TNOs are Cool": A survey of the trans-Neptunian region I. Results from the Herschel science demonstration phase (SDP)". Astronomy and Astrophysics 518: L146. arXiv:1005.2923. Bibcode:2010A&A...518L.146M. doi:10.1051/0004-6361/201014683.
- ↑ 5.0 5.1 Sheppard, Scott S. (2007). "Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes". The Astronomical Journal 134 (2): 787–798. arXiv:0704.1636. Bibcode:2007AJ....134..787S. doi:10.1086/519072.
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